Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{ARM_1985__21_2_a5, author = {Do\v{s}l\'y, Ond\v{r}ej}, title = {The basic properties of phase matrices of linear differential systems}, journal = {Archivum mathematicum}, pages = {113--121}, publisher = {mathdoc}, volume = {21}, number = {2}, year = {1985}, mrnumber = {817553}, zbl = {0579.34007}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1985__21_2_a5/} }
Došlý, Ondřej. The basic properties of phase matrices of linear differential systems. Archivum mathematicum, Tome 21 (1985) no. 2, pp. 113-121. http://geodesic.mathdoc.fr/item/ARM_1985__21_2_a5/